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Factor 4x 2 + 12x + 5 . (2x + 5)(2x + 1)

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4x^2 + 12x + 5=4x^2+2x+10x+5 \\ \\ =2x(2x+1)+5(2x+1)=(2x+5)(2x+1) \\ \\ \therefore4x^2+12x+5=(2x+5)(2x+1)
User Adam Driscoll
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